@jojay.bay
USPS treats the eBay Standard Envelope (ESE) identically with all the hundreds of thousands of other metered mail which USPS processes on a daily basis.
Because the ESE is metered mail, it is not "scanned" the same as standard USPS tracking -- the ESE can NOT be scanned at the counter or by a USPS driver.
Instead, it is machine-scanned during the automatic, high-speed sorting process at the next USPS Distribution Center, and not at the post office where the ESE originated.
And the USPS Distribution Centers are often located in other communities, and even other counties, many miles away from the post office of origin, which often means that the original "scan" may not occur until sometimes the following day.
And the final delivery "scan" only indicates the ZIP Code of the destination post office -- NOT the address of the buyer -- which means that there may easily be a lag of several days between delivery at the destination post office and delivery at the buyer's address, especially if the final "scan" occurs on a Saturday, with no home delivery until the following Monday (or Tuesday, in the case of holidays).
The bottom line is -- the ESE is metered mail, and USPS treats metered mail differently than regular USPS stamped mail.
Hope that begins to clear things up concerning the ESE.
